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Thermochemical and Constitutional Properties of Al-Si-Mg-Cu Alloys

Al-Si-Mg-Cu合金的热化学和组织性能

基本信息

批准号：
138384390
负责人：
Professor Dr.-Ing. Rainer Schmid-Fetzer
金额：
--
依托单位：
Institut für Metallurgie
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2010
资助国家：
德国
起止时间：
2009-12-31 至 2015-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/138384390?language=en
关键词：
Thermochemical Constitutional Properties Al Si

项目摘要

The global goal of this particular project- set in the initial proposal for the entire funding period - remains the systematic research aiming at the determination of thermochemical and constitutional properties for pertinent alloys of the Al-Si-Mg-Cu system. Dedicated experimental investigations on key alloy samples, selected by progressively advancing thermodynamic calculations in these systems are employed. This combination of Calphad-type calculations with selected experiments will be decisive for the final Calphad-type thermodynamic modelling with a consistent description of both the thermochemical properties and the entire phase diagram with highest precision. Providing these directly determined materials data is essential to the overall goal of understanding technologically relevant solidification of aluminium alloys quantitatively and reduces the inherent ambiguity in solidification models in which these properties are often misused as fitting parameters.In the proposed period the work will focus on the Cu-Si binary and the Al-Cu-Si ternary system and selected quaternary data. Jointly with the project “Thermodynamic evaluation of phase diagrams", a replacement of the preliminary thermodynamic description, based only on data available in the literature, is aimed at, combining the new experimental results and the ab initio energy calculations from “Ab initio prediction of thermodynamic data”. The quaternary Q phase and its phase equilibria will be investigated in more detail. After the complex preparation of Q as a single phase was achieved for the first time in close cooperation with “Critical solidification experiments” in the first round, the key thermodynamic data (heat of fusion resp. quaternary decomposition reaction and associated temperatures, as well as heat capacity as function of temperature) will be determined. To this purpose a spectrum of sophisticated laboratory equipment, specifically designed for high precision experimental investigation of thermodynamic and constitutional alloy properties is available.

这一项目的总体目标--在整个供资期间的初步提案中确定--仍然是系统的研究，目的是确定Al-Si-Mg-Cu系相关合金的热化学和成分性质。在这些体系中，通过逐步推进热力学计算，对关键合金样品进行了专门的实验研究。CALPHAD类型的计算与选定的实验的这种组合将对最终的CALPHAD类型热力学模型具有决定性作用，该模型具有对热化学性质和整个相图的一致描述，并且具有最高的精度。提供这些直接确定的材料数据对于定量了解与技术相关的铝合金凝固的总体目标至关重要，并减少凝固模型中这些性质经常被误用为拟合参数的固有模糊性。在拟议的时期内，工作重点将集中在铜-硅二元系和铝-铜-硅三元系以及选定的四元系数据上。结合“相图热力学评价”项目，旨在将新的实验结果与“热力学数据从头算预测”中的从头算能量计算结合起来，取代仅基于文献中已有数据的热力学描述。将更详细地研究四元Q相及其相平衡。在第一轮与“临界凝固实验”密切合作的情况下，首次实现了Q单相的复杂制备，得到了关键的热力学数据(熔化热、熔化热、熔融热容)。将确定四元分解反应和相关温度，以及作为温度函数的热容)。为此，提供了一系列复杂的实验室设备，专门为热力学和成分合金性能的高精度实验研究而设计。

项目成果

期刊论文数量（6）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Inherently consistent temperature function for interaction parameters demonstrated for the Mg–Si assessment

MgâSi 评估中展示的相互作用参数的固有一致温度函数

DOI：
10.1016/j.calphad.2016.06.003
发表时间：
2016
期刊：
Calphad-computer Coupling of Phase Diagrams and Thermochemistry
影响因子：
2.4
作者：
S.-M. Liang;P. Wang;R. Schmid-Fetzer
通讯作者：
R. Schmid-Fetzer

Evaluating the Growth Restriction Factor in Stable and Metastable Al-Si-Ti Alloy Solidification

评估稳定和亚稳定 Al-Si-Ti 合金凝固过程中的生长限制因素

DOI：
10.4028/www.scientific.net/msf.690.7
发表时间：
2011
期刊：
Materials Science Forum
影响因子：
0
作者：
A. Kozlov;R. Schmid-Fetzer
通讯作者：
R. Schmid-Fetzer

Is zinc HCP_ZN or HCP_A3

DOI：
10.1016/j.calphad.2012.01.006
发表时间：
2012-06
期刊：
Calphad-computer Coupling of Phase Diagrams and Thermochemistry
影响因子：
2.4
作者：
R. Schmid-Fetzer;B. Hallstedt
通讯作者：
R. Schmid-Fetzer;B. Hallstedt

Solidifying incongruently melting intermetallic phases as bulk single phases using the example of Al2Cu and Q-phase in the Al–Mg–Cu–Si system

DOI：
10.1016/j.jallcom.2011.11.119
发表时间：
2012-02
期刊：
Journal of Alloys and Compounds
影响因子：
6.2
作者：
A. Löffler;J. Gröbner;M. Hampl;H. Engelhardt;R. Schmid-Fetzer;M. Rettenmayr
通讯作者：
A. Löffler;J. Gröbner;M. Hampl;H. Engelhardt;R. Schmid-Fetzer;M. Rettenmayr